Cognomen קוניו (Kunio 
, קוניו 
) , in all the world, is quite a rare surname. The cognomen קוניו is characteristic of Japan, where it is quite a rare surname, Israel, where it is a rare surname, and Taiwan. Measured by absolute frequency, it most frequently occurs in Japan, China, and Indonesia. Very seldom, קוניו is the forename as well as the last name.